fix: process component overlay events together with those of the original element

Author: nicksenger

lazy/src/component.rs

@@ -24,6 +24,7 @@ where
         state: RefCell::new(Some(
             StateBuilder {
                 component: Box::new(component),
+                overlay_events: None,
                 cache_builder: |state| {
                     Some(
                         CacheBuilder {
@@ -55,6 +56,7 @@ struct Instance<'a, Message, Renderer, Event> {
 #[self_referencing]
 struct State<'a, Message: 'a, Renderer: 'a, Event: 'a> {
     component: Box<dyn Component<Message, Renderer, Event = Event> + 'a>,
+    overlay_events: Option<Vec<Event>>,
 
     #[borrows(mut component)]
     #[covariant]
@@ -103,6 +105,17 @@ impl<'a, Message, Renderer, Event> Instance<'a, Message, Renderer, Event> {
                 result
             })
     }
+
+    fn with_overlay_events_mut<T>(
+        &self,
+        f: impl FnOnce(&mut Option<Vec<Event>>) -> T,
+    ) -> T {
+        self.state
+            .borrow_mut()
+            .as_mut()
+            .unwrap()
+            .with_overlay_events_mut(f)
+    }
 }
 
 impl<'a, Message, Renderer, Event> Widget<Message, Renderer>
@@ -135,7 +148,9 @@ where
         clipboard: &mut dyn Clipboard,
         shell: &mut Shell<'_, Message>,
     ) -> event::Status {
-        let mut local_messages = Vec::new();
+        let mut local_messages = self
+            .with_overlay_events_mut(|overlay_events| overlay_events.take())
+            .unwrap_or_default();
         let mut local_shell = Shell::new(&mut local_messages);
 
         let event_status = self.with_element_mut(|element| {
@@ -168,6 +183,7 @@ where
             *self.state.borrow_mut() = Some(
                 StateBuilder {
                     component,
+                    overlay_events: None,
                     cache_builder: |state| {
                         Some(
                             CacheBuilder {
@@ -371,36 +387,9 @@ where
         });
 
         if !local_messages.is_empty() {
-            let mut component =
-                self.instance.state.take().unwrap().into_heads().component;
-
-            for message in local_messages
-                .into_iter()
-                .filter_map(|message| component.update(message))
-            {
-                shell.publish(message);
-            }
-
-            self.instance.state = RefCell::new(Some(
-                StateBuilder {
-                    component,
-                    cache_builder: |state| {
-                        Some(
-                            CacheBuilder {
-                                element: state.view(),
-                                message: PhantomData,
-                                overlay_builder: |element| {
-                                    element.overlay(layout)
-                                },
-                            }
-                            .build(),
-                        )
-                    },
-                }
-                .build(),
-            ));
-
-            shell.invalidate_layout();
+            self.instance.with_overlay_events_mut(|overlay_events| {
+                *overlay_events = Some(local_messages)
+            });
         }
 
         event_status